On-premises telephony

We tailor affordable and highly scalable voice solutions for small, medium and large businesses. Whether you’re a start-up, expanding or upgrading your existing investment or replacing an out of date phone system, we’ll look at your communication needs and design an On-Premises solution using the right product.

You won’t get a one size fits all approach, as we know every business is unique. We provide specialised phone infrastructure that will simplify your day-to-day operations, save you money and boost your overall efficiency and productivity.

We’ve partnered with industry leading firms including NEC, Cisco and Microsoft, and have over 30 years of experience designing, integrating and implementing highly available and robust telephony solutions that rely on 100% uptime.

Why Choose On-Premises Telephony for your business?

More control

On-Premises telephony solutions allow you to self-manage and control your upgrades and sensitive business data in-house.

Planned cost

You may prefer a planned capital investment, rather than a monthly operational expense – our On-Premises Telephony gives you that option.

Customise to your needs

On-Premises has the potential to be highly flexible and customised to fit your business.

Utilise your existing investment

We can upgrade your current telephony forward to a new model for a fraction of the cost of a new system. We’ll also provide a cost effective migration program so you no longer need to run the risk of relying on an out of date legacy system.

Read What Our Clients Have to Say

  • We had been experiencing numerous issues with the existing phone system and it was desperately in need of replacement. After investigating a number of solutions and integrators, PROSUM was selected as they showed professionalism in their proposal and it was clear their team was capable of delivering what was required. The team at PROSUM have provided great support and advice post-implementation, we will be continuing to use their services.


Ready to get started?

Contact our team – we’ll solve your communications challenges.

  • Prefer to get your phone system into the Cloud?

    PROSUM Hosted Telephony – enterprise grade, low cost, secure and reliable communications that’s both scalable and 100% provider managed.


explore our other communications solutions

Contact Centres

Contact Centres

We’ll help your business get ahead with a tailored Call or Contact Centre solution – whether Hosted or On-Premises, our expert team can help.

IP Call Recording

IP Call Recording

If your business needs an affordable call recording and monitoring system to improve service and ensure compliance, we can help.

SIP Lines

SIP Lines

Reduce your call cost and experience great savings when you connect your business. With flexible growth options and single or multiple lines.